| article html file updated | 26 September 2022 12:34 CEST | Original file | https://www.mdpi.com/2504-3900/2/4/151 |
| article pdf uploaded. | 31 May 2018 10:27 CEST | Updated version of record | https://www.mdpi.com/2504-3900/2/4/151/pdf |
| article pdf uploaded. | 18 January 2018 07:56 CET | Version of Record | https://www.mdpi.com/2504-3900/2/4/151/pdf-vor |
